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Hydroxy Compounds | Chemistry - IUPAC Nomenclature | 12th Chemistry : UNIT 11 : Hydroxy Compounds and Ethers

Chapter: 12th Chemistry : UNIT 11 : Hydroxy Compounds and Ethers

IUPAC Nomenclature

We have already learnt about naming the organic compounds according to IUPAC guidelines in XI standard. Let us recall the basic rules to name the alcohols.

IUPAC Nomenclature

We have already learnt about naming the organic compounds according to IUPAC guidelines in XI standard. Let us recall the basic rules to name the alcohols.

1. Select the longest continuous chain of carbon atoms (root word) containing the functional group ( -OH ).

2. Number the carbon atoms in the chain so that the carbon bearing the -OH group has the lowest possible number.

3. Name the substituent (if any)

4. Write the name of the alcohol as below.

Prefix + Root word + Primary sufffix + Secondary suffix

(substituents) + (longest chain) + (Saturation /unsaturation) + (ol)

The following table illustrates the IUPAC nomenclature of alcohols.



Evaluate Yourself:

1. Classify the following alcohols as 1º, 2º, and 3º and give their IUPAC Names.


2. Write all the possible isomers of an alcohol having the molecular formula C5H12O and give their IUPAC names.

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12th Chemistry : UNIT 11 : Hydroxy Compounds and Ethers : IUPAC Nomenclature | Hydroxy Compounds | Chemistry


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